java.net.SocketTimeoutException: Receive timed out

[nikunj shingala]

Hi,

I am new in this filed and try to run one example of SNMP but when i run that time below Exception are generated so please please help me...

Retrieving value corresponding to OID 1.3.6.1.2.1.1.1.0

Exception during SNMP operation: java.net.SocketTimeoutException: Receive timed out

Hear is my code .........So please check them and solve my exception .........


public class SNMPSampleSetGet
{
public static void main(String args[])
{

try
{

// create a communications interface to a remote SNMP-capable device;
// need to provide the remote host's InetAddress and the community
// name for the device; in addition, need to supply the version number
// for the SNMP messages to be sent (the value 0 corresponding to SNMP
// version 1)
InetAddress hostAddress = InetAddress.getByName("172.30.12.107");
String community = "public";
int version = 0; // SNMPv1

SNMPv1CommunicationInterface comInterface = new SNMPv1CommunicationInterface(version, hostAddress, community);



// now send an SNMP GET request to retrieve the value of the SNMP variable
// corresponding to OID 1.3.6.1.2.1.1.1.0; this is the OID corresponding to
// the device identifying string, and the type is thus SNMPOctetString
String itemID = "1.3.6.1.2.1.1.1.0";

System.out.println("Retrieving value corresponding to OID " + itemID);

// the getMIBEntry method of the communications interface returns an SNMPVarBindList
// object; this is essentially a Vector of SNMP (OID,value) pairs. In this case, the
// returned Vector has just one pair inside it.
SNMPVarBindList newVars = comInterface.getMIBEntry(itemID);

// extract the (OID,value) pair from the SNMPVarBindList; the pair is just a two-element
// SNMPSequence
SNMPSequence pair = (SNMPSequence)(newVars.getSNMPObjectAt(0));

// extract the object identifier from the pair; it's the first element in the sequence
SNMPObjectIdentifier snmpOID = (SNMPObjectIdentifier)pair.getSNMPObjectAt(0);

// extract the corresponding value from the pair; it's the second element in the sequence
SNMPObject snmpValue = pair.getSNMPObjectAt(1);

// print out the String representation of the retrieved value
System.out.println("Retrieved value: type " + snmpValue.getClass().getName() + ", value " + snmpValue.toString());

// the retrieved value can be obtained from the SNMPObject using the getValue method;
// the return type of the method is the generic base class Object, and must be cast to
// the appropriate actual Java type; in this case, for an SNMPOctetString, the underlying
// Java type is a byte array[]
byte[] javaByteArrayValue = (byte[])snmpValue.getValue();



// now send an SNMP GET request to retrieve the value of the SNMP variable
// corresponding to OID 1.3.6.1.2.1.1.3.0; this is the OID corresponding to
// the uptime of the device, and the return type is thus SNMPTimeTicks
itemID = "1.3.6.1.2.1.1.3.0";

System.out.println("Retrieving value corresponding to OID " + itemID);

// the getMIBEntry method of the communications interface returns an SNMPVarBindList
// object; this is essentially a Vector of SNMP (OID,value) pairs. In this case, the
// returned Vector has just one pair inside it.
newVars = comInterface.getMIBEntry(itemID);

// extract the (OID,value) pair from the SNMPVarBindList; the pair is just a two-element
// SNMPSequence
pair = (SNMPSequence)(newVars.getSNMPObjectAt(0));

// extract the object identifier from the pair; it's the first element in the sequence
snmpOID = (SNMPObjectIdentifier)pair.getSNMPObjectAt(0);

// extract the corresponding value from the pair; it's the second element in the sequence
snmpValue = pair.getSNMPObjectAt(1);

// print out the String representation of the retrieved value
System.out.println("Retrieved value: type " + snmpValue.getClass().getName() + ", value " + snmpValue.toString());

// the retrieved value can be obtained from the SNMPObject using the getValue method;
// the return type of the method is the generic base class Object, and must be cast to
// the appropriate actual Java type; in this case, for SNMPTimeTicks, which is a subclass
// of SNMPInteger, the actual type is BigInteger (which permits arbitrarily large values to
// be represented).
BigInteger javaIntegerValue = (BigInteger)snmpValue.getValue();



// now send an SNMP SET request to set the value of the SNMP variable
// corresponding to OID 1.3.6.1.2.1.1.1.0; this is the OID corresponding to
// the device identifying string, and the type is thus SNMPOctetString;
// to set a new value, a string is supplied
itemID = "1.3.6.1.2.1.1.1.0";

SNMPOctetString newValue = new SNMPOctetString("New device name");

System.out.println("Setting value corresponding to OID " + itemID);
System.out.println("New value: " + newValue.toString());

// the setMIBEntry method of the communications interface returns the SNMPVarBindList
// corresponding to the supplied OID and value
// This call will probably cause an SNMPSetException to be thrown, since the
// community name "public" is probably not the read/write password of the device
newVars = comInterface.setMIBEntry(itemID, newValue);



}
catch(Exception e)
{
System.out.println("Exception during SNMP operation: " + e + "\n");
}

}

}

Please solve my exception as possible as early ................